Kia Niro: Service Highlight / High voltage shut-off procedures

Kia Niro 2017 (DE HEV) Service Manual / Service Highlight / High voltage shut-off procedures

High Voltage Shut-off Procedures

•	Be sure to read and follow the “General Safety Information and Caution” before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.

•	Be sure to read and follow the “High Voltage Shut-off Procedures” before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.

High voltage components:

High Voltage Battery Pack Assembly, Power Relay Assembly (PRA), BMS ECU, Hybrid Power Control Unit (HPCU), Hybrid Drive Motor, HSG, Electric A/C Compressor, Low DC/DC Converter (LDC), Power Cable, Electric Compressor etc.

1.	Turn the ignition switch OFF and disconnect the auxiliary 12V battery negative (-) terminal.

2.	Remove the safety plug cover (A) under the rear seat..

3.	Unfasten the hook (A) to the direction of arrow.

4.	Unfasten the lever (A) to the direction of arrow.

5.	Remove the safety plug (A).

6.	Wait at least 5 minutes or until the capacitor in the high voltage system is fully discharged.

Measure the voltage between the inverter terminals to check that the capacitor in the inverter is discharged completely.

(1)	Remove air cleaner assembly and air duct. (Refer to Engine Mechanical System – “Air Cleaner”)

(2)

Disconnect the inverter power cable (A).

Disconnect the inverter power cable as the procedures below.

(3)

Measure the voltage between the inverter (+) terminal and the inverter (-) terminal.

Less than 30V : High voltage circuit properly shut

More than 30V : Fault on high voltage circuit

If measured more than 30V, check if the safety plug is removed completely.If measured more than 30V despite the safety plug is removed, there can be serious problems on the high voltage circuit. In this case, check DTC and never touch the high voltage system circuits.

General safety information and caution

Safety Precaution Precautions to take before servicing high voltage system ...

High voltage battery handling guide

High voltage battery system inspection guide Be sure to read and follow the ...

Other information:

Kia Niro 2017 (DE HEV) Service Manual: Knock Sensor (KS) Repair procedures
Removal 1. Switch "OFF" the ignition and disconnect the negative (-) battery terminal. 2. Remove the intake manifold. (Refer to Engine Mechanical System - “Intanke Manifold”) 3. Remove the installat ...

Kia Niro 2017 (DE HEV) Service Manual: Description and operation
Description TREAD Lamp – Tire Under Inflation / Leak Warning. 1. Turn on condition • When tire pressure is below allowed threshold • When rapid leak is detected b ...